23 North Ninth Street, Milton Keynes, MK9 3AN

23 North Ninth Street is a mid-terrace house in Milton Keynes (MK9 3AN). It has a recorded floor area of 27 m² (around 291 sq ft), construction records dating it to 1976-1982 and council tax band A. At 27 m² this is the 2nd smallest of 43 units on EPC record in the building, where floor areas span 26–49 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (October 2025) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (December 2015); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while window efficiency dropped from Good to Average and main heating dropped from Good to Average. The recommended improvements would push it to C (score 72).

At 27 m² it's 15.6% smaller than the typical home in the postcode (32 m² median across 42 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sold July 2018 for £100,000. Across the public record there are 4 sales, relatively high churn for a single property. Across 1996–2018, sale prices on this property compounded at 9.6% per year. Today's modelled estimate of £112,000 is 12% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£344/sq ft) was about 50.7% above the typical sold price in the postcode.